81990575

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{1873}}^1$

素因数の和:2003

約数の個数: 24

約数和(自身を含む): 108751968

約数和(自身を除く): 26761393

約数列:

[1, 5, 17, 25, 85, 103, 425, 515, 1751, 1873, 2575, 8755, 9365, 31841, 43775, 46825, 159205, 192919, 796025, 964595, 3279623, 4822975, 16398115, 81990575]

約数ペア:

[(1, 81990575), (5, 16398115), (17, 4822975), (25, 3279623), (85, 964595), (103, 796025), (425, 192919), (515, 159205), (1751, 46825), (1873, 43775), (2575, 31841), (8755, 9365)]